Javascript 未捕获类型错误：无法读取属性'；路线'；_Javascript_Html_Google Maps_Google Maps Api 3

Javascript 未捕获类型错误：无法读取属性'；路线'；

javascript html google-maps google-maps-api-3

Javascript 未捕获类型错误：无法读取属性'；路线'；,javascript,html,google-maps,google-maps-api-3,Javascript,Html,Google Maps,Google Maps Api 3,我使用Google Maps API构建了一个地图，该地图将根据“whereNew.js”的纬度和经度绘制点，标记的颜色将取决于“MarketData.js”中的另一个参数。当点击标记时，它将显示一个信息窗口，其中有一个按钮——“ShowRoutes”和一些基于“MarketData.js”的信息。到目前为止，代码已成功执行在此之后，当单击任何标记的“显示路线”按钮时，我希望Google Maps API显示从“MarketData.js”第8列的每个位置到该标记的所有路线。但是，当我单击该按

我使用Google Maps API构建了一个地图，该地图将根据“whereNew.js”的纬度和经度绘制点，标记的颜色将取决于“MarketData.js”中的另一个参数。当点击标记时，它将显示一个信息窗口，其中有一个按钮——“ShowRoutes”和一些基于“MarketData.js”的信息。到目前为止，代码已成功执行

在此之后，当单击任何标记的“显示路线”按钮时，我希望Google Maps API显示从“MarketData.js”第8列的每个位置到该标记的所有路线。但是，当我单击该按钮时，它会出现以下错误：

未捕获的TypeError:无法读取calculateAndDisplayRoute处未定义的属性“route”

其中newtest1.html:162

我不明白我做错了什么，请帮忙

whereNewTest1.html

    <html>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Markets of Kolkata</title>
    <style>
    #map {
      height: 100%;
    }
    /* Optional: Makes the sample page fill the window. */

    html,
    body {
      height: 100%;
      margin: 0;
      padding: 0;
    }

    #floating-panel {
      position: absolute;
      top: 10px;
      left: 25%;
      z-index: 5;
      background-color: #fff;
      padding: 5px;
      border: 1px solid #999;
      text-align: center;
      font-family: 'Roboto', 'sans-serif';
      line-height: 30px;
      padding-left: 10px;
    }

    #warnings-panel {
      width: 100%;
      height: 10%;
      text-align: center;
    }
    </style>
    <link href="http://google-developers.appspot.com/maps/documentation/javascript/examples/default.css" rel="stylesheet">

    <!-- If you are in China, you may need to use theis site for the Google Maps code
    <script src="http://maps.google.cn/maps/api/js" type="text/javascript"></script> -->
    <!--<script src="http://maps.googleapis.com/maps/api/js?sensor=false"></script> -->
    <!-- <script async defer src=
        "https://maps.googleapis.com/maps/api/js?libraries=geometry,drawing&key=AIzaSyDrdSH53E0MRIfajUGZQiFHAB0aLfzFIVU&v=3&v=3&callback=displayDirections"></script>
    </script> -->
  <script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBbXta5ppMyzPmTCGNsyP-djMlSOGJ9t9o&callback=initialize">
  </script>

    <script src="whereNew.js"></script>
    <script src="marketData.js"></script>
    <script>

    var directionsDisplay;
    var directionsService = new google.maps.DirectionsService();
    var map;
    var markerArray = [];
    var dest ;
    function initialize() 
    {
        //alert("To see the title of a marker, hover over the marker but don't click.");
        var myLatlng = new google.maps.LatLng(22.39361,88.099263)
        var mapOptions = {
            zoom: 3,
            center: myLatlng,
            mapTypeId: google.maps.MapTypeId.ROADMAP
            }

        var markerArray = [];
        var directionsService = new google.maps.DirectionsService;
        var directionsDisplay = new google.maps.DirectionsRenderer(
        {
            map: map
        });


        var map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions);
        i = 0;
        var markers = [];

        for ( pos in myData ) 
        {    
            var row = myData[pos];
            var row1 = MarketInfo[i];
            window.console && console.log(row) && console.log(row1);
            // if ( i < 3 ) { alert(row); }
            var newLatlng = new google.maps.LatLng(row[0], row[1]);
            var marker = new google.maps.Marker(
            {
                position: newLatlng,
                map: map,
                title: row[3],
            });

            var infowindow = new google.maps.InfoWindow({ });
            var largeInfowindow = new google.maps.InfoWindow({ });
            dest = row1[1];
            var content = row1[2] + '<br/><button onclick = "calculateAndDisplayRoute(directionsDisplay, directionsService, markerArray, map, dest);">Show Routes</button>';

            if((content.search("WHOLESALE"))>-1)
            {
                marker.setIcon('http://maps.google.com/mapfiles/ms/icons/red-dot.png');
            }
            else if((content.search("WHOLE SALE"))>-1)
            {
                marker.setIcon('http://maps.google.com/mapfiles/ms/icons/red-dot.png');
            }
            else if((content.search("MAJOR"))>-1)
            {
                marker.setIcon('http://maps.google.com/mapfiles/ms/icons/blue-dot.png');
            }
            else
            {
                marker.setIcon('http://maps.google.com/mapfiles/ms/icons/green-dot.png');
            }

            google.maps.event.addListener(marker,'click', (function(marker,content,infowindow)
            { 
                return function() 
                {
                    infowindow.setContent(content);
                    infowindow.open(map,marker);
                };
            })(marker,content,infowindow));

            markers.push(marker);   
            i = i + 1;
        }




        function populateInfoWindow(marker, infowindow)
        {
            if(infowindow.marker != marker)
            {
                infowindow.marker = marker;
                infowindow.setContent('<div>'+infowindow.content+'</div>');
                infowindow.open(map, marker);

                infowindow.addListener('closeclick', function(){
                infowindow.setMarker(null);
                });

            }   
        } 
    }

    function calculateAndDisplayRoute(directionsDisplay, directionsService, markerArray, map, dest) 
    {
        for (var i = 0; i < markerArray.length; i++) 
        {
        markerArray[i].setMap(null);
        }

        for (pos in MarketInfo) 
        {
        var row = MarketInfo[pos];
        // Second loop for multiple destination
        var str_array = row[7].split(',');
        for (var j = 0; j < str_array.length; j++) 
        {
            directionsService.route(
            {
            origin: str_array[j],
            destination: dest,
            travelMode: 'DRIVING'
            }, function(response, status) {
                if (status === 'OK') 
                {
                    document.getElementById('warnings-panel').innerHTML = '<b>' + response.routes[0].warnings + '</b>';
                    var dirDisplay = new google.maps.DirectionsRenderer({
                    map: map
                });
                dirDisplay.setDirections(response);
                }else 
                {
                    window.alert('Directions request failed due to ' + status);
                }
          });
        }
    }
    }


    </script>

  <body onload="initialize()">
<div id="map_canvas" style="height: 600px"></div>
<p>
<b>Developed by</b>
<a href="http://www.linkedin.com/in/arnab-chakravarty-8a329111b?trk=nav_responsive_tab_profile"><b>Arnab Chakravarty</b></a>.
</p>
</body>
</html>

MarketData.js

myData = [ 
[22.5193768,88.3656851, 'K.M.C. Market, 3rd Floor Market Complex, 212, Rash Behari Avenue Road, Hindustan Park, Gariahat, Kolkata, West Bengal 700019, India', 'PAL BAZAR'], 
[22.4977887,88.3796042, 'Garfa Main Rd, Kolkata, West Bengal 700075, India', 'RAMLAL BAZAR'], 
[22.5048463,88.3882325, 'Purbachal Main Rd, Ramlal Bazar, Haltu, Kolkata, West Bengal 700078, India', 'COLLEGE STREET MARKET ( SPORTS GOODS)'] 
];

MarketInfo = [
["GARIAHAT KMC MARKET", "K.M.C. Market, 3rd Floor Market Complex, 212, Rash Behari Avenue Road, Hindustan Park, Gariahat, Kolkata- 700019", "MAJOR (1400SHOP + HOWKER)", "FRUITS, VEGETABLES, FLOWER, FISH, MEAT, GROCERY, CLOTHING, FURNITURE , HOUSEHOLD, FOOTWEAR ELECTRICAL ETC", "", "", "BARABAZAR, KOLEYMART", "HOWRAH", "We collect the goods ourselves", "", "MANY", "Cars, Light goods vehicles (LGV), Heavy goods vehicles/lorries (HGV)", "Within one hour", "", "", "No problems encountered", "", "IF A UNLOADING SPACE CAN PROVIDE BY GOVT. IT WILL BE BETTER"], 
["PAL BAZAR", "GARIFA MAIN ROAD, KOLKATA - 700 075", "MINOR (150SHOP + 70HOWKERS)", "FRESH, COOL AND FROZEN PRODUCT, OTHER TYPE OF CONSUMER GOODS, TEXTILE,FOOTWEAR, ELECTRONIC AND ELECTRICAL EQUIPMENT, BUILDING MATERIALS", "", "SANDHYA BAZAR", "BARA BAZAR, CHADNI CHOWK", "", "The goods are delivered by multiple suppliers", "MANY", "10 TO 20", "Bicycles/tricycles/carts, Motorised two/three-wheelers", "Within one hour", "", "", "Delivery vehicle causes traffic jams in front of the establishment", "", ""], 
["RAMLAL BAZAR", "Purbachal Main Rd, Ramlal Bazar, Haltu. Kolkata-700078", "MINOR (150 SHOP+ 180 HOWKERS)", "FRUITS, VEGETABLE, FISH, MEAT, GROCERY, TEXTILE, ELECTRICAL, BUILDING MATERIALS ETC", "", "BAGHAJATIN AND SANDHYA BAZAR", "BARA BAZAR, EZRA ST.", "", "We collect the goods ourselves", "", "MANY", "Bicycles/tricycles/carts, Motorised two/three-wheelers, Light goods vehicles (LGV)", "Within one hour", "", "", "Limited storage space available, Delivery vehicle causes traffic jams in front of the establishment, High delivery costs", "", "PARKING PLACE REQUIRE"]
];

问题出在这行代码中

var content = row1[2] + '<br/><button onclick = calculateAndDisplayRoute(directionsDisplay, directionsService, markerArray, map, row1[1]);>Show Routes</button>';

将错误行更改为：

var content = row1[2] + '<br/><button onclick="calculateAndDisplayRoute(' + i + ')">Show Routes</button>';

您的代码中有一个不应该存在的

。@JohnM我检查了两次。我认为这不是问题所在。是的，它解决了问题。谢谢

var content = row1[2] + '<br/><button onclick="calculateAndDisplayRoute(' + i + ')">Show Routes</button>';

function calculateAndDisplayRoute(i) {
        var destination1 =  MarketInfo[i][1];
...
}